m1ch43lzm MY DEAR FRIEND!! 😊 success! after re-flowing a CPU, laptops starts again!
This is now with the latest BIOS's you've sent me, thank you so much!
This is now with the latest BIOS's you've sent me, thank you so much!
Attached Files
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Very likely Lenovo used Low temperature solder
https://news.lenovo.com/pressroom/pr...uring-process/
https://semiengineering.com/verifyin...t-performance/
https://www.youtube.com/watch?v=rkmON6h5B0IComment
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Looks like this is it... now sure how long this will last before I'll have to do proper reballing... At least I know what is wrong with it now.
Thanks once again!
Here is short video of my reflow, must watch till the end!
https://youtu.be/5vfeV0ad2wIComment
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Hi everyone,
I have an HP Elitebook 840 G5 that I am trying to get working again. I've removed the front bios chip (the 32mb one) and have run it through HP unlocker already. I've uploaded and verified the new bin, but am now experiencing an issue that has led me to believe I've been soldering the chip back to the motherboard incorrectly.
Essentially, after re-soldering the chip back into its place and reassembling the laptop, the charging light immediately flashes orange and white and then shifts to a solid white. The capslock and numlock lights blink seven times... -
Hi Everyone,
I bought a Yihua 992DA+ hot air gun and soldering iron unit from a used market.
1. Soldering iron works great
2. There is a burnt mark on the hot air gun handle.
I am a bit concern by the look of the melted plastic. I opened the hot air gun handle and took some readings with a multimeter.
Heating element ~ 75ohm. (Similar reading taken from a spare heating element that came with the unit.)
Thermocouple ~ 1.5ohm. (Similar reading from the spare heating element.)
Reed switch tested ok with a magnet.
From the above test, I can conclude... -
hello.
A few months ago,I have purchased 0.1mm Soldering Iron Tip of below aliexpress link,But I noticed that It is totally impossible to use this 0.1mm iron tip in the T12 soldering station
https://ko.aliexpress.com/item/4001275635593.html
Is there any good soldering station which is possible to use 900M-TJ-I tip and have inexpensive or reasonable price in aliexpress?
Any reply would be appreciated. -
Hi,
We continue to struggle with the SEF 551.10 reflow oven. After we managed to start it in october - the topic here -> https://www.badcaps.net/forum/troubl...he-reflow-oven everything promised to be good. But...
While soldering with lead paste somehow goes, but we cannot force the stove to raise the temperature
that he would dissolve the unleaded binder. I even doubted what this bastard shows on screen and passed through it a thermocouple...03-16-2025, 09:26 AM -
I have been working on this concept for quite some time now with limited success but recently I found a switching power supply that is setup for the voltage that this soldering station needs to operate at however it also needs part of the secondary circuit from the original switching power because you need several voltage rails
I once tried to get a ZD-915 desoldering station to work on a 18 volt battery power supply but unfortunately things did not go well but I did find a work around but I might try this idea again but going at a little differently more about this another time...
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